THE PATTERN OF CLASS I, CLASS II AND CLASS III MALOCCLUSION IN URBAN PRIMARY SCHOOL CHILDREN AGED 11 -14 YEARS

In this country in the age group of 11-14 there is a noticeable crowding of teeth. There is
therefore need to study the extent of this malocclusion. While malocclusion is a clinically
unacceptable arrangement of the teeth in any plane of space or in which there are anomalies
in the teeth position beyond the limit of normal occlusion. It is classified as follows
according to Edward .H. Angle:
Class I malocclusion is the normal relationship of the molars but line of occlusion
incorrect because of the malposed teeth, rotation or other causes
Class II malocclusion is the lower molar distally positioned relative to upper molar,
line of occlusion not specified.
Class III malocclusion is the lower molar mesially positioned relative to upper molar,
line of occlusion not specified.
OBJECTIVES
To determine the pattern of malocclusion among 11 -14 year old children who attend an
urban primary school, Nairobi, Kenya
To determine the sex distribution of malocclusion
SUBJECTS AND METHODS
Oral examination of 11-14 years in a school using simple diagnostic tools, recording and
analyzing the data.
The study will be done in the Karen C Primary School, a public urban school located in the
outskirts of the City of Nairobi along Langata Road.
All school children 11-14 yrs of age who attend Karen C Primary School between classes 6
and 8. A convenient sampling method was used. All school children that met the inclusion
criteria were included.
A total of 250 children will be included in the study over a period of 2 months
Through this study the data maybe used as a future reference in determining the prevalence
of malocclusion in Kenya and used for intervention to benefit children.